Microsoft was forced to delay the release of the final version of Windows Vista to manufacturers due to a bug found in the final stretch of testing. IDG News quotes a tester who revealed that the bug "would totally crash the system, requiring a complete reinstall."

According to DigiTimes, Vista build version 5824 reduced the bug count from from 1450 to around 500 since the second release candidate and was set for RTM (release to manufacturing) on October 25 before the bug was uncovered.